Problem with a 1994 Mazda 2300 4 cil 8 spark.

ANONYMOUS

1994 MAZDA B2300

157,000 MILES

Problem with a 1994 mazda 2300 4 cil 8 spark plugs when I shift into 2nd gear my rpms shoot up to 4000 I let go of the accelerator and it takes until I get the truck to a completee stop to go down already tryed jack valve, tps, cooling snsor, trotle body, egr valve and lately a new computer and cant get it right